71215265 has 8 divisors (see below), whose sum is σ = 93227328. Its totient is φ = 51792880.

The previous prime is 71215253. The next prime is 71215283. The reversal of 71215265 is 56251217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71215265 - 2¹² = 71211169 is a prime.

It is a super-2 number, since 2×71215265² = 10143227938040450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647357 + ... + 647466.

It is an arithmetic number, because the mean of its divisors is an integer number (11653416).

Almost surely, 2^71215265 is an apocalyptic number.

It is an amenable number.

71215265 is a deficient number, since it is larger than the sum of its proper divisors (22012063).

71215265 is a wasteful number, since it uses less digits than its factorization.

71215265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294839.

The product of its digits is 4200, while the sum is 29.

The square root of 71215265 is about 8438.9137334138. The cubic root of 71215265 is about 414.4998377570.

It can be divided in two parts, 712152 and 65, that added together give a palindrome (712217).

The spelling of 71215265 in words is "seventy-one million, two hundred fifteen thousand, two hundred sixty-five".